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2016 ; 2016
(ä): 1-17
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Post-GWAS Prioritization Through Data Integration Provides Novel Insights on
Chronic Obstructive Pulmonary Disease
#MMPMID27812370
Lu Q
; Jin C
; Sun J
; Bowler R
; Kechris K
; Kaminski N
; Zhao H
Stat Biosci
2016[]; 2016
(ä): 1-17
PMID27812370
show ga
Rich collections of genomic and epigenomic annotations, availabilities of large
population cohorts for genome-wide association studies (GWAS), and advancements
in data integration techniques provide the unprecedented opportunity to
accelerate discoveries in complex disease studies through integrative analyses.
In this paper, we apply a variety of approaches to integrate GWAS summary
statistics of chronic obstructive pulmonary disease (COPD) with functional
annotations to illustrate how data integration could help researchers understand
complex human diseases. We show that incorporating functional annotations can
better prioritize GWAS signals at both the global and the local levels. Signal
prioritization on severe COPD GWAS reveals multiple potential risk loci that are
linked with pulmonary functions. Enrichment analysis provides novel insights on
the pathogenesis of COPD and hints the existence of genetic contributions to
muscle dysfuncion and chronic lung inflammation, two symptoms that are often
co-morbid with COPD. Our results suggest that rich signals for COPD genetics are
still buried under the Bonferroni-corrected genome-wide significance threshold.
Many more biological findings are expected to emerge as more samples are
recruited for COPD studies.